EDIT: #10 Bonus (Suggested by @kerstenwirth ) — always check the ticker symbol. Ticker symbols are not universal, and may vary from exchange to exchange in rare cases. Those cases, though, can come back to bite you. For example, Bitcoin Cash trades on some exchanges as BCH, while it trades on others as BCC. BCC is also the ticker symbol for BitConnect, which was recently outted as a Ponzi Scheme. If you bought BCC under the impression was Bitcoin Cash, you would’ve lost a lot of money.
The first thing you need to get started trading bitcoin is to open a bitcoin wallet. If you do not have a bitcoin wallet then you can open one at the biggest wallet called coinbase.  We have arranged a special deal for everyone wanting to get started in bitcoin to get a free $10 at coinbase. Get your free $10 by opening your coinbase account here. 

For instance, suppose you’re day trading Bitcoin and have a rule that you’ll close your position if its price hits 10% over the price for which you bought it. Bitcoin hits that marker so, like a good day trader, you follow your rule strictly and sell. But then, unexpectedly the price just keeps going up as the market continues to recognize Bitcoin’s value. By focusing on day trading, you missed out on greater potential profits.
The fight over whether bitcoin’s currency code should be BTC or XBT is ongoing (as of November 2017). When bitcoin was first introduced, BTC became both the abbreviation for bitcoin and its currency code. As bitcoin gained momentum and recognition, a large portion of the community asked for a better currency code that adheres to the International Standards Organization’s rules on cryptocurrency codes, mainly that currencies not associated with a specific country should start with the letter X, hence XBT.
Bart Smith, the head of digital assets at trading giant Susquehanna, told that BTC remains the best option for those willing to invest in virtual currencies due to its functionality and widespread use. He called bitcoin “the currency of the Internet” and praised its numerous real-world use cases, such as cross-border payments or bitcoin ATMs, introduced in Europe for the first time in June.
You can’t simply go to a bank and ask for any digital currency. Instead, you’ll need a proper digital platform for making any trade in Bitcoin, Ether, Ripple or as a matter of fact any crypto. After all, that’s the whole point of creating digital currencies. Cryptocurrency exchange platforms are such online portals that allow you to exchange a digital currency (cryptocurrency) for another one or even a fiat currency depending upon the type of exchange.

One of the basic strategies that you can look into is buying at the right time. It is natural to buy cheap when there’s a surplus of assets lying around. The challenge is to know when the supply is greatly ahead of the demand. Profit can be easily made with the gap between the cheap purchase an expensive sell. Another ideal way to purchase coins is at the time when ICOs (Initial Coin Offering) is introduced.
A beginner might prefer to trade cryptocurrency stocks on the stock market (GBTC is a trust that owns Bitcoin and sells shares of it; trading this avoids you having to trade cryptocurrency directly). The main Bitcoin stock here in 2018 is GBTC. Be aware that GBTC trades at a premium (meaning bitcoins are cheaper than buying shares of the GBTC trust), which isn’t ideal. Also, cryptocurrency trading is a 24-hour market, where the traditional stock market is not. Learn more about the GBTC Bitcoin Trust and the related pros and cons before you invest.
A “manageable amount” is obviously subjective and will vary for each person based on things such as time available to dedicate to trading. Feel free to do your own research to find the right exchange for you. I tend to value user experience of an exchange over the amount of coins on it. Ultimately, what exchanges you use is going to depend on your own personal preferences. GDAX and Poloniex will provide sufficient resources needed to be a successful trader, so they are definitely a good place to start.
As was mentioned above, there are two ways to examine investment in Altcoins – vs Bitcoin and vs the US dollar. This is a common mistake amongst those who missed the Bitcoin train, and are looking to cash in on the other altcoins. Those investors have to examine the investment dollar-wise, since they exchange US dollars or out FIAT in order to buy crypto (instead of buying with the Bitcoins they already have).

While these rules are by no means the only lessons you need, they’re definitely a great starting point. Sometimes, though, things are easier said than done, such as watching your portfolio value plummet and still having the iron willpower of resisting the sell button. One of the best solutions I’ve found to this was to join a community of like-minded cryptocurrency investors. Educated and smart crypto-traders, as well as the community members, will all be there to support your efforts and will be holding with you in the rough times.